Which is better? SuiteSolutions - Advanced Approvals or SuiteApprovals? Does anyone have a copy of the solution guide for the said SuiteSolutions? I can't find it on SuiteAnswers. Maybe because it's a SuiteSolutions.

You don't need either. Depending on YOUR requirements, you can have someone design the workflow for you at a lower one time cost. I have made plenty of these for my clients. Hit me up if you have any questions.

plesae do not get that suiteapprovals thing

Advanced approvals has been deprecated, I don’t think NetSuite will let you install it anymore. SuiteApprovals is their replacement for it and it works ok depending on what you need it to do, but it has some major undocumented limitations so I would only go that route if you are not familiar with creating custom workflows and/or you don’t have strong requirements for approvals (eg you only want supervisor approval, or you are open to changing your approval routing based on what SuiteApprovals can do).